Cromwell



(No-Model.)

O. 0. CASE. LEVER CONNECTION FOR DOOR CHECKS AND ULOSEES.

No. 599,415. Patented Feb. 22, 189B.

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INVENTOR Cmirzu/eZZ 0 C'asa.

WITNESSES ATTORNEY- CROMWVELL 0. CASE, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE P. 85 F. CORBIN, OF SAME PLACE.

LEVER CONNECTICN FOR DCCR CHECKS AND CLOSERE.

SPECIFICATION forming part of Letters Eatent No. 599,415, dated February 22, 1898. Application filed July 2, 1897. Serial No- 643,28'7. (No model.)

To ctZZ whom it may concern.-

Be it known that I, ORoMwELL 0. CASE, a citizen of the United States, residing at New Britain, Hartford county, Connecticut, have invented certain new and useful Improvements in Lever Connections for Door Checks and the Like, of which the following is a full, clear, and exact description.

My invention relates to an improved lever connection for door checks and the like, among the main objects of the same being the provision of asuitable means whereby cramping or binding upon the check mechanism is avoided when the parts are in operation and the provision of a means whereby lateral motion or slipping of the parts of the lever-arm, which is adjustable as to length, is prevented.

Referring to the drawings, Figure 1 is a plan view. Fig. 2 is a sectional detail of one of the connections, showing the end of one of the sections of the adjustable lever-arm in connection therewith. Fig. 3 is a detail view of the end of the other section of the adjustable lever-arm. Fig. 4 is a section on line y Fig. 2, and slightly enlarged. Fig. 5 is a section on line a .2, Fig. 3, and slightly enlarged. Fig. 6 is a section on line m 00, Fig. 1.

A is a door-casing.

B is a door.

C is a door check or closer.

D is a lever-arm carried and operated by the mechanism C. The lever-arm by which the free end of the arm D is connected to the casing A is composed of two sections E and E, the same being adjustable as to length.

F is a clamp, and F a tightening-screw, by which means the sections E E are held at any desired position.

G is a journal-bearing ordinarily secured to the casing A. In the rear of the journal G is carried an adjusting screw or plug G the inner end of the said screw or plug being preferably dished.

G G are flanges in the front of the bearing G.

In assembling the parts G E the plug G is first removed and the arm E passed through the bearin g G from the rear until the head E is seated, as shown in Fig. 2. The plug G is then replaced, the same affording a means for tightening or loosening the joint at that point.

The elbow-joint between the two lever-arms is illustrated in Figs. 1 and 6, in which a ballbearing E is carried by the arm E, a suitable socket being provided in the other arm E, adapted to receive said ball-bearing, the adjustment of the parts being effected by the plug D. It is manifest that this order of arrangement may be reversed. The abutting faces of the parts D E are rounded, as shown in Fig. 6, to give sufficient universal play. The ball-bearing E may be secured to its lever-arm in any desirable manner.

From the above it will be seen that oramping or binding of the check mechanism is avoided.

The means by which lateral motion and slipping of the sections E E are accomplished comprises primarily a longitudinal rib H, carried by one of the sections E E, and a corresponding groove or depression I in the other section, into which said rib II projects. The facing surfaces of the sections E E may be in addition gnurled or roughened or provided with transverse ribs registering alternately with each other, so as to prevent longitudinal slipping. By this means the effective longitudinal adjustment of this arm is made possible and side motion or slipping of the sec tions E E prevented.

While the check C is shown as attached to the door B and the bearing G is shown as attached to the casing, there are instances in which this arrangement may be reversed.

Other changes in detail of construction and arrangement from those illustrated may be made without departing from the spirit and scope of my invention, and it should not be understood that it is my intention to limit myself to the precise arrangement and construction herein shown and described.

That I claim is- In a lever connection for door-checks and the like, a lever-arm adjustable as to length, said arm comprising two sections, a central longitudinal groove in the engaging face of one of said sections, a central longitudinal rib on the other section corresponding to said groove, fiat engaging faces on each side of Signed at New Britain, in the county of said groove and rib, said fiat faces being pro- Hartford and State of Connecticut, this 25th vided with alternate transverse ribs and day of June, 1897.

grooves, the transverse ribs in one of said CROMWELL 0. CASE. 5 sections registering with the transverse Witnesses:

grooves in the other section, and a clamp ern- ALBERT N. ABBE,

bracing said sections. G. ERNEST ROOT. 

